Shuttle-mounting for sewing-machines.



E. ERICKSON.

SHUTTLE MOUNTING FOR SEWING MACHINES.

APPLICATION FILED MAR. 27. 1 915.

1,182,842. Patented May 9,1916.

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llldliTEfi STATES PATENT EDWARD EBIGKSON, OF LYNN, MASSACHUSETTS,ASSIGNOR TO VICTOR SHOE MACHINERY (30., OF BOSTON, MASSACHUSETTS, ACORPORATION OF MASSA- GHUSETTS.

SHUTTLE-MOUNTING FOB SEWING-MACHINES.

Original application filed July 20, 1914, Serial No. 852,103.

Serial No. 17,944.

tion being a divisionof another application of mine filed July 20, 1914and numbered 852,103.

The invention. consists of certain novel features of construction andarrangement of parts which will be fully understood by reference to thedescription of the drawings and to the claims hereinafter given.

Of the drawings: Figure 1 represents an elevation of a mounting forshuttles embodying the principles of the present invention, said figureshowing the shuttle in said mounting and a portion of the shuttledriving member, and Fig. 2 represents a section of the same, the cuttingplane being on line 22 on Fig. 1.

Similar characters designate like parts throughout the figures of thedrawings.

In the drawings, 14 is a shuttle casing in which is mounted a shuttle 15having a bobbin recess 16 in one face thereof, and a peripheral recess17 adjacent to the hook 18 of said shuttle. This shuttle 15 is revolublein the casing 14 and is prevented from accidental displacement therefromby means of the plate 18 secured to the casing 14 by means of the screws19. Within the recess 16 is positioned a bobbin 20 adapted to rotateupon a spindle 21 forming a part of the shuttle 15. The outer face ofthe casing 14 has projecting therefrom ears 22 to which is pivoted at28, a bar 24, the free end of which extends beyond the casing 14 and hasa notch 25 in the upper edge thereof. Secured to the front face of theshuttle casing 14 by means of a screw 26 is a latch 27 adapted to coactwith the notch 25 to lock the bar 24 in position parallel to the shuttle15 as indicated in Fig. 2 of the drawings.

The bar 24 has parallel openings 28 ex- Specification of Letters Patent.

Patented May 1, 121%.

Divided and this application filed March 27,

tending therethrough in each of which is mounted a friction member suchas the ball 29 pressed outwardly by means of the spring 30 in theopening 28. Behind each spring 30 is an adjusting member 31 threaded tothe bar 24 and adapted to ad just the tension of the spring 30 inwellknown manner.

lVhen the bar 24 is in the position indicated in Fig. 2 of the drawings,the balls 29 bear against the outer face of the bobbin 20 and createsuflicient friction thereon to prevent it from rotating too rapidly. The

rapidity of rotation ofthebobbin can be regulated by adjusting thetension of the springs 30 by means of the members 31.

The walls of the openings 30 at the mouth thereof are somewhatcontracted to prevent the accidental displacement of the balls 29 whenthe bar 24 is unlocked to move about its pivot to permit of the removalof the bobbin 20.

The shuttle 15 is operated by means of the lever 48 having a lateral lug49 positioned in the recess 17.

It is believed that the operation and many advantages of this inventionwill be fully understood from the foregoing description.

Having thus described my invention, 1 claim:

1. In a sewing machine, the combination of a rotatably mounted shuttleprovided with a bobbin recess; a bobbin therein; a shuttle supportingbracket; means engaging the closed side of said shuttle for impartingrotary movement thereto; a bar hinged to said bracket and extendingacross the outer face of said bobbin, means for normally locking saidbar to said bracket; and members supported by said bar and havingfrictional contact upon the face of said bobbin on opposite sides of itscenter.

2. In a sewing machine, the combination of a rotatably mounted shuttleprovided with a bobbin recess; a bobbin therein; a shuttle supportingbracket; means engaging the closed side of said shuttle for impartingrotary movement thereto; a bar hinged to said bracket and extendingacross the outer face of said bobbin, means for normally locking saidbar to said bracket; members supported by said bar and having frictionalcontact upon the face of said bobbin; and means adjustablymounted onsaid bar for regulating the frictional contact of said members.

3. In a sewing machine, the combination of a rotatably mounted shuttleprovided with a bobbin recess; a bobbin therein; a shuttle supportingbracket; means engaging the closed side of said shuttle for impartingrotary movement thereto; a bar pivoted to said supporting bracket; meansfor locking said bar to said supporting bracket; and spring pressedballs carried by said bar and adapted to bear upon the outer face ofsaid bobbin near the outer edge thereof.

t. In a sewing machine, the combination of a rotatably mounted shuttleprovided with a bobbin recess; a bobbin therein; a shuttle supportingbracket; means engaging the closed side of said shuttle for impartingrotary movement thereto; a bar pivoted to said supporting member; meansfor locking said bar; spring pressed balls carried by said bar andadapted to bear upon the outer face of said bobbin; and means threadedto said bar for adjusting the tension of said springs.

5. In a sewing machine the combination of a rotatably mounted shuttleprovided with a bobbin recess; a bobbin therein; a shuttle supportingbracket; means engaging said shuttle for imparting rotary movementthereto; a bar secured to said bracket and extending across the outerface of said bobbin, said bar having openings therethrough with inwardlyextending lips at their inner ends; a ball in each opening in contactwith the face of said bobbin; a spring in each opening normally forcingthe ball against said lip; and a member threaded to said bar and adaptedto regulate the tension of each spring.

Signed by me at 4 Post Ofiice Sq., Boston, Mass, this 1st day of March,1915.

EDWARD ERICKSON. lVitnesses EDWARD F. ALLEN, WALTER E. LOMBARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G."

